GRM7 regulates embryonic neurogenesis via CREB and YAP

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Metabotropic glutamate receptor 7 (GRM7) has recently been identified to be associated with brain developmental defects, such as attention deficit hyperactivity disorder (ADHD) and autism. However, the function of GRM7 during brain development remains largely unknown. Here, we used gain- and loss-of-function strategies to investigate the role of GRM7 in early cortical development. We demonstrate that Grm7 knockdown increases neural progenitor cell (NPC) proliferation, decreases terminal mitosis and neuronal differentiation, and leads to abnormal neuronal morphology. GRM7 regulates the phosphorylation of cyclic AMP response element-binding protein (CREB) and the expression of Yes-associated protein (YAP) by directly interacting with CaM, which subsequently regulates the expression of CyclinD1 and ultimately affects early cortical development. These defects in neurogenesis are ameliorated by Grm7 overexpression, Creb knockdown, or Yap knockdown. Thus, our findings indicate that GRM7 signaling via CREB and YAP is necessary for neurogenesis in the brain.




Xia, W., Liu, Y., & Jiao, J. (2015). GRM7 regulates embryonic neurogenesis via CREB and YAP. Stem Cell Reports, 4(5), 795–810.

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